Zoological Institute RAS, St. Petersburg, Russia.
Institute of Cytology RAS, St. Petersburg, Russia.
J Eukaryot Microbiol. 2022 May;69(3):e12889. doi: 10.1111/jeu.12889. Epub 2022 Feb 7.
We described Pelomyxa doughnuta sp. nov. and examined it with the use of light, electron, and immunofluorescence microscopy as well as cytochemical methods. The cells of P. doughnuta sp. nov. are usually binuclear, although cells with one, three, or four nuclei are sometimes found in the population. A unique feature of the new species is a dense capsule around the nucleus. It consists of a continuous layer of glycogen 5-20 µm thick. The tubulin cytoskeleton is mainly represented by perinuclear microtubules. P. doughnuta sp. nov. has a filamentous glycocalyx and strongly reduced components of flagellar apparatus. Obligate prokaryotic endocytobionts of two morphotypes are present in the cytoplasm.
我们描述了新种胶涡鞭毛虫（Pelomyxa doughnuta sp. nov.），并使用光镜、电镜和免疫荧光显微镜以及细胞化学方法对其进行了研究。新种胶涡鞭毛虫的细胞通常为双核，但有时也可以在群体中发现单核、三核或四核的细胞。该新种的一个独特特征是核周围有一层密集的胶囊。它由一层 5-20 µm 厚的连续糖原层组成。微管细胞骨架主要由核周微管组成。新种胶涡鞭毛虫具有丝状糖萼和强烈减少的鞭毛器成分。在细胞质中存在两种形态型的必需原核内共生体。
